// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <vector>

#include "paddle/cinn/adt/equation_value.h"
#include "paddle/cinn/adt/index_expr_infer_context.h"
#include "paddle/cinn/adt/tags.h"

namespace cinn::adt {

class IndexExprInferContext;

void SolveEquations(
    const EquationGraphTopoWalker<Variable, const Function*>& walker,
    const std::vector<Variable>& starts,
    IndexExprInferContext* ctx);

tHasNoConflictValue<bool> TrySolveEquations(
    const EquationGraphTopoWalker<Variable, const Function*>& walker,
    const Variable& start,
    IndexExprInferContext* ctx);

void CheckEquationsSolvable(
    const EquationGraphTopoWalker<Variable, const Function*>& walker,
    const Variable& start,
    IndexExprInferContext* ctx);

}  // namespace cinn::adt
